Home / 378,218.20-566,636.10-307,715.80

Finding the Fourth Proportional to 378,218.20, 566,636.10 and 307,715.80

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Solution

The fourth proportional to 378,218.20, 566,636.10 and 307,715.80 is: 461,011.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,218.20 : 566,636.10 = 307,715.80 : x
  2. Step 2: Convert to fraction form
    378,218.20/566,636.10 = 307,715.80/x
  3. Step 3: Cross multiply
    378,218.20x = 566,636.10 × 307,715.80
  4. Step 4: Simplify right side
    378,218.20x = 174,362,880,820.38
  5. Step 5: Solve for x
    x = 174,362,880,820.38/378,218.20
  6. Step 6: Final answer
    x = 461,011.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.